Corrugating-machine.



PATENTBD DEC. 18, 1906.

I. W. NUMAN. 'GOR-RUGATING MACHINE.

APPLICATION FILED MAY 21, 190B.

2 sums-snarl.

Isaac MOW/rim:

THE NORRIS rzrlns ca., wnsnma'mu. n. c.

PATENTED DEC. 18, 1906.

I. W. NUMAN. 'GORRUGATING MACHINE.

APPLIOATION FILED 121.1906.

2 SHEETS-SHEET 2.

3 vwanloz ISAAC W. NUMAN, OF CANTON, OHIO.

CORRUGATING-NIACHINE.

Specification of Letters Patent.

Patented Dec. 18, 1906.

Application filed May 21 1906. Serial No. 318.089-

Figure 1 is a perspective view showing the different parts of the corrugating-machine properly arranged and the mandrel placed in position to corrugate or flute a tapered column. Fig. 2 is a front elevation of the corrugating-head, showing parts broken away I and illustrating a transverse section of the mandrel. Fig. 3 is a sectional view of the corrugating-head. Fig. 4 is a plan view of a portion of the mandrel and its connectinghead. Fig. 4 is a detached perspective view of a finished column. Fig. 5 is a perspective view of the corrugating-machine, showing the mandrel swung into position to receive a skelp and showing a skelp partially placed in position upon the mandrel. Fig. 6 is a vertical section of the upper portion of the sliding head, showing the mandrel joint or hinge. Fig. 7 is a front elevation of a corrugatinghead, showing a modification from that illustrated in Fig. 2. Fi 8 is a sectional view of the corrugating-head, showing a portion of the mandrel and a skelp thereon and illustrating the skelp partially corrugated or fluted, the corrugating-head being the modified form shown in Fig. 7. Fig. 9 is a detached perspective view showing a portion of two springs detached and the adjusting-bolt detached therefrom. Fig. 10 is a transverse section of the mandrel and skelp.

The present invention has relation to corrugatingmachines especially designed to corrugate or flute tapered columns; and it consists in the different parts and combina tion of parts hereinafter described, and par ticularly pointed out in the claims.

Similar numerals of reference indicate corresponding parts in all the figures of the drawings.

In the accompanying drawings, 1 represents the parallel frame members, which are supported at the required height by means of suitable legs 2, which may be attached to the parallel frame members 1 in any convenient and well-known manner. The parallel frame members 1 are held in proper spaced relation with reference to each other by means of the tie-plates 3 and 4, which tie-plates are bolted or otherwise attached to the frame members 1. Upon the tic-plate 3 or its equivalent are attached the shaft-boxes 5, which, of course, are for the purpose of providing suitable bearings for the shafts 6 and 7, the shaft 6 being driven by the power-wheel 8 and its driving-belt 9, which driving-belt leads to a driving pulley or pulleys capable of being reversed to reverse the motion of the shafts 6 and 7. However, the reverse mechanism does not form any particular part of the present invention; but, as hereinafter described, it will be seen that it is necessary to reverse the shafts 6 and 7.

Upon the shafts 7 are securely mounted the sprocket-wheels 10, which sprocketwheels are for the purpose of imparting motion to the sprocket-chains 11, said sprocketchains being located substantially as shown and extend around the idle sprocket-wheels 12. Upon the frame members 1 is located the mandrel-head 13, which mandrel-head is substantially of the form shown and, as shown, it is provided with the opening 14, which opening is for the purpose of receiving the mandrel-stem 15, which mandrel-stem may be formed integral with the mandrel 16 or it may be made separate and attached in any convenient and well-known manner.

The mandrel-stem 15 is pivotally attached to the head 13 by means of the pin 17, which pin of course passes through suitable apertures formed in the head 13 and the mandrelstem 15. The mandrel 16 is formed of a length equal to the length of the column designed to be produced, and of course its length may vary, but it must be of such a length that the longest column designed to be corrugated or fluted may be placed upon the mandrel.

It will of course be understood that columns of less length than the mandrel can be corrugated or fluted; but the mandrel must be of a length equal to the longest column designed to be operated upon.

The mandrel 16 is corrugated or fluted longitudinally, the corrugations or flutes being of the form and size designed to be produced upon or given to the column. The mandrel 16 is tapered and is tapered for the purpose of producing a tapered column, the pitch of the taper being of any desired degree, reference being had to the itch designed to be given to the finished co umn. To the mandrel-head 13 are attached the bars 18, which bars are connected to the sprocket-chains 11, as best illustrated in Figs. 1 and 5, and of course when motion is imparted to the sprocket-chains the mandrel-head will be moved with the movement of the sprocketchain, it of course being understood that the arms 18 are to be attached only to the upper members of the sprocket-chains 11 or to the under members, as desired. The arms 18 are shown attached to the upper members of the sprocket-chain.

For the purpose of holding the mandrelhead in proper position upon the frame members 1 said head is provided with the arms 18, which arms are extended downward and their lower ends provided with the antifriction-rollers 19, which antifriction-rollers are located in contact with the outer under edges of the frame members.

Upon the tie-plate 4 or its equivalent is attached the corrugating-head 20, which corrugating-head is provided with a series of radially-adjustable bars 21 and 22, which bars are bifurcated at their inner ends and in which inner bifurcated ends are journaled the corrugating-rolls 23 and 24. The rolls 23 and 24 are located out of alinement or, in other words, in diflerent radial planes. The peripheries of the rolls 23 are rounded and are so rounded for the purpose of forcing or pressing the metal into the grooves of the tapered mandrel 16. The peripheries of the ro ls 24 are grooved and are so grooved for the purpose of forcing or pressing the metal upon and in contact with the ridges of the corrugated mandrel 16, and thereby prevent any axillary or turning movement of the skelp during the time the corrugations or flutes are being formed by the longitudinal movement of the mandrel 16.

It is well understood that in the formation of columns for use in buildings it is preferable and necessary to employ much heavier material than is necessary in the manufac ture of corrugated conductor-pipe, and therefore it is necessary to employ the grooved rolls 24 in order to produce corrugations of true alinement 'or parallelism throughout their entire length, said grooved rollers bringing the metal in close contact with the ribs of the mandrel 16.

In the formation of columns such as the present machine is designed to produce it is of im ortance that there be no movement of the s elp upon the mandrel, and in order to prevent any axillary movement of the manssaseq drel said mandrel is provided with the groove 25, formed in one of the ribs 26, which groove receives the seam of the skelp. The groove 25 also acts as a' guide in placing the skelp upon the mandrel, as it is understood that the skelp is to be moved endwise upon the mandrel, so as to bring the mandrel within the'skelp, and when the skelp has been placed in position to be acted upon by the corrugating-rolls the seam of the skelp will be located in the groove 25 throughout its entire length.

Another object and purpose of forming the groove 25 and locating the seam of the skelp in the groove is to prevent any disruption of the seam during the time the corrugations or flutes are being formed in the skelp by the longitudinal movement of the mandrel and skelp at the time said skelp and mandrel are moved so as to bring the skelp under pressure of the circumferential set of corrugating rolls. In use the mandrel is moved through the corrugating-head, the smaller end of the mandrel first entering the space surrounded by the circumferential set or series of corrugating-rolls. The corrugating-rolls are so adjusted toward their common center that they will properly act upon the least diameter of the skelp designed to be corrugated. As the mandrel advances the diameter thereof increases, and of course the corrugating-rolls must move away from their common center, so as to compensate for the inclined surface of the tapered mandrel. The

corrugating-rolls must have substantially the same pressure upon the metal from one end of the skelp to. the other regardless of the taper of the skelp acted upon, and in order to accomplish this result the radial bars must be adjustable, so as to allow a slight reciprocating movement of the bar. The bars, however, are normally held at their innermost points by means of suitable springs 27, which springs are located between the nuts 28, located upon the bars 21 and 22 and the peripheral flange 29, by which arrangement the bars 21 and 22, together with the corrugating-rolls 23 and 24, can be forced away from their common center, but at the same time maintain substantially an equal pressure of the corrugating-rolls upon the entire length of the skelp.

It will be understood that the reciprocating movement of the bars 21 and 22 is but slightas, for instance, each bar is only required to move one-half of the distance upon the lesser and greater diameters of the skelp, so that the increased tension of the springs is but slight and little change in the degree of pressure of the corrugating-rolls is brought about as the skelp and mandrel move to produce the corrugations in the skelp. The mandrel 16 should be at all times so situated that its longitudinal center should be on the same horizontal plane as the common center of the corrugating-rolls, so that said corrugating-rolls will exercise the same degree of pressure, and in order to adjust the mandrel vertically from time to time to compensate for the wear and at the same time firmly hold the shank 15 in the opening 14 the screws 30 are provided, which screws are so arranged that their inner ends will come in direct contact with the upper and lower faces of the shank 15. In order to provide any direct contact with the ends of the screws .during the time the mandrel 16 is swung in either direction, the inner ends of the screw should be rounded, so that as the mandrel-shank passes from one screw to the other there will be no catchingor jarring.

In Fig. 7 the corrugating-head 20 is shown provided with a modified form of springs from the ones illustrated in Figs. 1, 2, 3, and 5, and the bars 31, which carry the corrugating-rolls 23 and 24, are substantially the same except they are formed somewhat shorter and their outer ends located against the inner faces of the springs 32, which springs in this instance consist of fiat curved sections and the sections loosely connected together by means of the screws 33, the inner ends of which engage the notches 34, which notches are located in the lapped portion of the springs. In some instances it may be unnecessary to employ the double series of corrugating-rolls, owing to the fact that the series of corrugating-rolls provided with the curved peripheries will make the corrugations or flutes independent of the grooved rolls traveling upon the ridges of the corrugating-mandrel. I do not desire to be confined to the double set or series of corrugating-rolls.

For the purpose of changing the tension of the various springs 27 so as to give said springs a uniform tension the nuts 28 are adjustable to and from the peripheral flange 29. It is well understood that the springs should all exert a uniform pressure, and in order to accomplish this the nuts 28 are adjusted to and from a common center upon the screw-threaded portions of the bars 21 and 22.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a corrugating-machine of the class described, a frame, a movable head, a tapered corrugating-mandrel carried by the head, a series of corrugating-rolls surrounding the mandrel, said corrugating-rolls carried by a head, and the rolls yieldingly mounted in the head, substantially as and for the purpose specified.

2. In a corrugating-machine of the class described, a mandrel having different diameters, said mandrel provided with a seam holding groove, a corrugating-head provided with a series of corrugating-rolls surrounding the mandrel, and said rolls yieldingly mounted in the head, substantially as and for the purpose specified.

3. In a corrugating-machine of the class described, a frame a mandrel and a head movable upon the frame, and the mandrel pivotally attached to the traveling head, said mandrel tapered throughout its length and a corrugating-head provided with a series of corrugating-rolls yieldingly mounted, substantially as and for the purposespecified.

1. In a corrugating-machine of the class described, a frame and a movable head provided with an opening, a mandrel provided with a shank adapted to be located in the opening and upper and lower screws adapted to carry the mandrel and a corrugating-head provided with a series of corrugating-rolls, substantially as and for the purpose specified.

5. In a corrugating-machine of the class described, a frame, a traveling head mounted upon'the frame, means for imparting reciprocating movement to the head, a mandrel hinged to the head, and adapted to reciprocate with the head, a corrugating-head provided with a series of corrugating-rolls, the mandrel provided with a shank and the shank held in vertical adjustment by adjustable screws substantially as and for the purpose specified.

6. In a corrugating-machine of the class described, the combination of a frame, a reciprocating mandrel head mounted upon said frame, arms secured to said reciprocating head and provided with antifriction-rollers, means for actuating the arms, a mandrel tapered throughout its length and pivotally attached to the reciprocating head and a corrugating-head provided with a series of corrugating-rolls adjustably mounted in the head, substantially as and for the purpose specified.

7. In a corrugating-machine of the class described, a frame and a reciprocating head mounted thereon, a tapered mandrel carried by the reciprocating head and adapted to move with the head, a oorrugating-head provided with a circumferential set or series of bars having screw-threaded portions nuts located upon the screw-threaded portions of the bars and springs located around the bars and a series of corrugating-rolls carried by the bars, substantially as andfor the purpose specified.

8. In a corrugating-machine of the class described, .a frame, a corrugated mandrel supported upon the frame and adapted to reciprocate a corrugating-head provided with two series of corrugating-rolls one set of the series provided With outwardly-curved peripheries and the other set of the series provided with grooved peripheries, and the grooved peripheries of the corrugating-rolls 5 adapted for contact With the ribs of the corrugated mandrel, substantially as and for the purpose specified.

In testimony that I claim the above I have. hereunto subscribed my name in the presence of two Witnesses.

ISAAC W. NUMAN;

Witnesses:

J. A. JEFFERS, F. W. BOND. 

